<!DOCTYPE html>
<html lang="zh" dir="ltr" class="client-nojs">
<head>
<title>std::regex_match</title>
<meta charset="UTF-8">
<meta name="generator" content="MediaWiki 1.21.2">
<link rel="shortcut icon" href="../../../common/favicon.ico">
<link rel="stylesheet" href="../../../common/ext.css">
<meta name="ResourceLoaderDynamicStyles" content="">
<link rel="stylesheet" href="../../../common/site_modules.css">
<style>a:lang(ar),a:lang(ckb),a:lang(fa),a:lang(kk-arab),a:lang(mzn),a:lang(ps),a:lang(ur){text-decoration:none}#toc{display:none}.editsection{display:none}
/* cache key: mwiki1-mwiki_zh_:resourceloader:filter:minify-css:7:15cea3ec788a65b5187d4018eed543bf */</style>

<script src="../../../common/startup_scripts.js"></script>
<script>if(window.mw){
mw.config.set({"wgCanonicalNamespace":"","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":0,"wgPageName":"cpp/regex/regex_match","wgTitle":"cpp/regex/regex match","wgCurRevisionId":55695,"wgArticleId":3533,"wgIsArticle":true,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":[],"wgBreakFrames":false,"wgPageContentLanguage":"zh","wgSeparatorTransformTable":["",""],"wgDigitTransformTable":["",""],"wgDefaultDateFormat":"zh","wgMonthNames":["","1月","2月","3月","4月","5月","6月","7月","8月","9月","10月","11月","12月"],"wgMonthNamesShort":["","1月","2月","3月","4月","5月","6月","7月","8月","9月","10月","11月","12月"],"wgRelevantPageName":"cpp/regex/regex_match","wgUserVariant":"zh","wgRestrictionEdit":[],"wgRestrictionMove":[]});
}</script><script>if(window.mw){
mw.loader.implement("user.options",function(){mw.user.options.set({"ccmeonemails":0,"cols":80,"date":"default","diffonly":0,"disablemail":0,"disablesuggest":0,"editfont":"default","editondblclick":0,"editsection":0,"editsectiononrightclick":0,"enotifminoredits":0,"enotifrevealaddr":0,"enotifusertalkpages":1,"enotifwatchlistpages":0,"extendwatchlist":0,"externaldiff":0,"externaleditor":0,"fancysig":0,"forceeditsummary":0,"gender":"unknown","hideminor":0,"hidepatrolled":0,"imagesize":2,"justify":0,"math":1,"minordefault":0,"newpageshidepatrolled":0,"nocache":0,"noconvertlink":0,"norollbackdiff":0,"numberheadings":0,"previewonfirst":0,"previewontop":1,"quickbar":5,"rcdays":7,"rclimit":50,"rememberpassword":0,"rows":25,"searchlimit":20,"showhiddencats":0,"showjumplinks":1,"shownumberswatching":1,"showtoc":0,"showtoolbar":1,"skin":"cppreference2","stubthreshold":0,"thumbsize":2,"underline":2,"uselivepreview":0,"usenewrc":0,"watchcreations":0,"watchdefault":0,"watchdeletion":0,
"watchlistdays":3,"watchlisthideanons":0,"watchlisthidebots":0,"watchlisthideliu":0,"watchlisthideminor":0,"watchlisthideown":0,"watchlisthidepatrolled":0,"watchmoves":0,"wllimit":250,"variant":"zh","language":"zh","searchNs0":true,"searchNs1":false,"searchNs2":false,"searchNs3":false,"searchNs4":false,"searchNs5":false,"searchNs6":false,"searchNs7":false,"searchNs8":false,"searchNs9":false,"searchNs10":false,"searchNs11":false,"searchNs12":false,"searchNs13":false,"searchNs14":false,"searchNs15":false,"gadget-MathJax":1,"gadget-ColiruCompiler":1});;},{},{});mw.loader.implement("user.tokens",function(){mw.user.tokens.set({"editToken":"+\\","patrolToken":false,"watchToken":false});;},{},{});
/* cache key: mwiki1-mwiki_zh_:resourceloader:filter:minify-js:7:258d7cd6aa9aa67dee25e01fb6a9e505 */
}</script>
<script>if(window.mw){
mw.loader.load(["mediawiki.page.startup","mediawiki.legacy.wikibits","mediawiki.legacy.ajax"]);
}</script>
<style type="text/css">/*<![CDATA[*/
.source-cpp {line-height: normal;}
.source-cpp li, .source-cpp pre {
	line-height: normal; border: 0px none white;
}
/**
 * GeSHi Dynamically Generated Stylesheet
 * --------------------------------------
 * Dynamically generated stylesheet for cpp
 * CSS class: source-cpp, CSS id: 
 * GeSHi (C) 2004 - 2007 Nigel McNie, 2007 - 2008 Benny Baumann
 * (http://qbnz.com/highlighter/ and http://geshi.org/)
 * --------------------------------------
 */
.cpp.source-cpp .de1, .cpp.source-cpp .de2 {font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;}
.cpp.source-cpp  {font-family:monospace;}
.cpp.source-cpp .imp {font-weight: bold; color: red;}
.cpp.source-cpp li, .cpp.source-cpp .li1 {font-weight: normal; vertical-align:top;}
.cpp.source-cpp .ln {width:1px;text-align:right;margin:0;padding:0 2px;vertical-align:top;}
.cpp.source-cpp .li2 {font-weight: bold; vertical-align:top;}
.cpp.source-cpp .kw1 {color: #0000dd;}
.cpp.source-cpp .kw2 {color: #0000ff;}
.cpp.source-cpp .kw3 {color: #0000dd;}
.cpp.source-cpp .kw4 {color: #0000ff;}
.cpp.source-cpp .co1 {color: #909090;}
.cpp.source-cpp .co2 {color: #339900;}
.cpp.source-cpp .coMULTI {color: #ff0000; font-style: italic;}
.cpp.source-cpp .es0 {color: #008000; font-weight: bold;}
.cpp.source-cpp .es1 {color: #008000; font-weight: bold;}
.cpp.source-cpp .es2 {color: #008000; font-weight: bold;}
.cpp.source-cpp .es3 {color: #008000; font-weight: bold;}
.cpp.source-cpp .es4 {color: #008000; font-weight: bold;}
.cpp.source-cpp .es5 {color: #008000; font-weight: bold;}
.cpp.source-cpp .br0 {color: #008000;}
.cpp.source-cpp .sy0 {color: #008000;}
.cpp.source-cpp .sy1 {color: #000080;}
.cpp.source-cpp .sy2 {color: #000040;}
.cpp.source-cpp .sy3 {color: #000040;}
.cpp.source-cpp .sy4 {color: #008080;}
.cpp.source-cpp .st0 {color: #008000;}
.cpp.source-cpp .nu0 {color: #000080;}
.cpp.source-cpp .nu6 {color: #000080;}
.cpp.source-cpp .nu8 {color: #000080;}
.cpp.source-cpp .nu12 {color: #000080;}
.cpp.source-cpp .nu16 {color:#000080;}
.cpp.source-cpp .nu17 {color:#000080;}
.cpp.source-cpp .nu18 {color:#000080;}
.cpp.source-cpp .nu19 {color:#000080;}
.cpp.source-cpp .ln-xtra, .cpp.source-cpp li.ln-xtra, .cpp.source-cpp div.ln-xtra {background-color: #ffc;}
.cpp.source-cpp span.xtra { display:block; }

/*]]>*/
</style><style type="text/css">/*<![CDATA[*/
.source-text {line-height: normal;}
.source-text li, .source-text pre {
	line-height: normal; border: 0px none white;
}
/**
 * GeSHi Dynamically Generated Stylesheet
 * --------------------------------------
 * Dynamically generated stylesheet for text
 * CSS class: source-text, CSS id: 
 * GeSHi (C) 2004 - 2007 Nigel McNie, 2007 - 2008 Benny Baumann
 * (http://qbnz.com/highlighter/ and http://geshi.org/)
 * --------------------------------------
 */
.text.source-text .de1, .text.source-text .de2 {font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;}
.text.source-text  {font-family:monospace;}
.text.source-text .imp {font-weight: bold; color: red;}
.text.source-text li, .text.source-text .li1 {font-weight: normal; vertical-align:top;}
.text.source-text .ln {width:1px;text-align:right;margin:0;padding:0 2px;vertical-align:top;}
.text.source-text .li2 {font-weight: bold; vertical-align:top;}
.text.source-text .ln-xtra, .text.source-text li.ln-xtra, .text.source-text div.ln-xtra {background-color: #ffc;}
.text.source-text span.xtra { display:block; }

/*]]>*/
</style><!--[if lt IE 7]><style type="text/css">body{behavior:url("/mwiki/skins/cppreference2/csshover.min.htc")}</style><![endif]--></head>
<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_regex_regex_match skin-cppreference2 action-view cpp-navbar">
        <!-- header -->
        <!-- /header -->
        <!-- content -->
<div id="cpp-content-base">
            <div id="content">
                <a id="top"></a>
                <div id="mw-js-message" style="display:none;"></div>
                                <!-- firstHeading -->
<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::</span>regex_match</h1>
                <!-- /firstHeading -->
                <!-- bodyContent -->
                <div id="bodyContent">
                                        <!-- tagline -->
                    <div id="siteSub">来自cppreference.com</div>
                    <!-- /tagline -->
                                        <!-- subtitle -->
                    <div id="contentSub"><span class="subpages">&lt; <a href="../../cpp.html" title="cpp">cpp</a>‎ | <a href="../regex.html" title="cpp/regex">regex</a></span></div>
                    <!-- /subtitle -->
                                                            <!-- bodycontent -->
                    <div id="mw-content-text" lang="zh" dir="ltr" class="mw-content-ltr"><div class="t-navbar" style=""><div class="t-navbar-sep"> </div><div class="t-navbar-head"><a href="../../cpp.html" title="cpp"> C++</a><div class="t-navbar-menu"><div><div><table class="t-nv-begin" cellpadding="0" style="line-height:1.1em;">
<tr class="t-nv"><td colspan="5"> <a href="../language.html" title="cpp/language">语言</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../header.html" title="cpp/header">标准库头文件</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../freestanding.html" title="cpp/freestanding"> 自立与有宿主实现</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../named_req.html" title="cpp/named req">具名要求</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../utility.html#.E8.AF.AD.E8.A8.80.E6.94.AF.E6.8C.81" title="cpp/utility">语言支持库</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../concepts.html" title="cpp/concepts">概念库</a> <span class="t-mark-rev t-since-cxx20">(C++20)</span> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../error.html" title="cpp/error">诊断库</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../utility.html" title="cpp/utility">工具库</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../string.html" title="cpp/string">字符串库</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="https://zh.cppreference.com/w/cpp/container" title="cpp/container">容器库</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../iterator.html" title="cpp/iterator">迭代器库</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../ranges.html" title="cpp/ranges"> 范围库</a> <span class="t-mark-rev t-since-cxx20">(C++20)</span> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../algorithm.html" title="cpp/algorithm">算法库</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../numeric.html" title="cpp/numeric">数值库</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../io.html" title="cpp/io">输入/输出库</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../locale.html" title="cpp/locale">本地化库</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../regex.html" title="cpp/regex">正则表达式库</a> <span class="t-mark-rev t-since-cxx11">(C++11)</span> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../atomic.html" title="cpp/atomic">原子操作库</a> <span class="t-mark-rev t-since-cxx11">(C++11)</span> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../thread.html" title="cpp/thread">线程支持库</a> <span class="t-mark-rev t-since-cxx11">(C++11)</span> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../filesystem.html" title="cpp/filesystem">文件系统库</a> <span class="t-mark-rev t-since-cxx17">(C++17)</span> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../experimental.html" title="cpp/experimental">技术规范</a> </td></tr>
</table></div><div></div></div></div></div><div class="t-navbar-sep"> </div><div class="t-navbar-head"><a href="../regex.html" title="cpp/regex">正则表达式库</a><div class="t-navbar-menu"><div><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv-h1"><td colspan="5"> 类</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="basic_regex.html" title="cpp/regex/basic regex"><span class="t-lines"><span>basic_regex</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="sub_match.html" title="cpp/regex/sub match"><span class="t-lines"><span>sub_match</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="match_results.html" title="cpp/regex/match results"><span class="t-lines"><span>match_results</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv-h1"><td colspan="5"> 算法</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><strong class="selflink"><span class="t-lines"><span>regex_match</span></span></strong></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="regex_search.html" title="cpp/regex/regex search"><span class="t-lines"><span>regex_search</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="regex_replace.html" title="cpp/regex/regex replace"><span class="t-lines"><span>regex_replace</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv-h1"><td colspan="5"> 迭代器</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="regex_iterator.html" title="cpp/regex/regex iterator"><span class="t-lines"><span>regex_iterator</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="regex_token_iterator.html" title="cpp/regex/regex token iterator"><span class="t-lines"><span>regex_token_iterator</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv-h1"><td colspan="5"> 异常</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="regex_error.html" title="cpp/regex/regex error"><span class="t-lines"><span>regex_error</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv-h1"><td colspan="5"> 特性</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="regex_traits.html" title="cpp/regex/regex traits"><span class="t-lines"><span>regex_traits</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv-h1"><td colspan="5"> 常量</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="syntax_option_type.html" title="cpp/regex/syntax option type"><span class="t-lines"><span>syntax_option_type</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="match_flag_type.html" title="cpp/regex/match flag type"><span class="t-lines"><span>match_flag_type</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error_type.html" title="cpp/regex/error type"><span class="t-lines"><span>error_type</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv-h1"><td colspan="5"> 正则表达式文法</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="ecmascript.html" title="cpp/regex/ecmascript"><span class="t-lines"><span>Modified ECMAScript-262</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
</table></div><div></div></div></div></div><div class="t-navbar-sep"> </div></div>
<table class="t-dcl-begin"><tbody>
<tr class="t-dsc-header">
<td> <div>定义于头文件 <code><a href="../header/regex.html" title="cpp/header/regex">&lt;regex&gt;</a></code>
 </div></td>
<td></td>
<td></td>
</tr>
<tr class="t-dcl t-since-cxx11">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1">&lt;</span> <span class="kw1">class</span> BidirIt, <br>
<p>          <span class="kw1">class</span> Alloc, <span class="kw1">class</span> CharT, <span class="kw1">class</span> Traits <span class="sy1">&gt;</span><br>
<span class="kw4">bool</span> regex_match<span class="br0">(</span> BidirIt first, BidirIt last,<br>
                  <a href="match_results.html"><span class="kw2007">std::<span class="me2">match_results</span></span></a><span class="sy1">&lt;</span>BidirIt,Alloc<span class="sy1">&gt;</span><span class="sy3">&amp;</span> m,<br>
                  <span class="kw4">const</span> <a href="http://zh.cppreference.com/w/cpp/regex/basic_regex"><span class="kw1999">std::<span class="me2">basic_regex</span></span></a><span class="sy1">&lt;</span>CharT,Traits<span class="sy1">&gt;</span><span class="sy3">&amp;</span> e,<br>
                  <a href="match_flag_type.html"><span class="kw2037">std::<span class="me2">regex_constants</span><span class="sy4">::</span><span class="me2">match_flag_type</span></span></a> flags <span class="sy1">=</span> <br>
</p>
                      <a href="match_flag_type.html"><span class="kw2038">std::<span class="me2">regex_constants</span><span class="sy4">::</span><span class="me2">match_default</span></span></a> <span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td> (1) </td>
<td> <span class="t-mark-rev t-since-cxx11">(C++11 起)</span> </td>
</tr>
<tr class="t-dcl t-since-cxx11">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1">&lt;</span> <span class="kw1">class</span> BidirIt, <br>
<p>          <span class="kw1">class</span> CharT, <span class="kw1">class</span> Traits <span class="sy1">&gt;</span><br>
<span class="kw4">bool</span> regex_match<span class="br0">(</span> BidirIt first, BidirIt last,<br>
                  <span class="kw4">const</span> <a href="http://zh.cppreference.com/w/cpp/regex/basic_regex"><span class="kw1999">std::<span class="me2">basic_regex</span></span></a><span class="sy1">&lt;</span>CharT,Traits<span class="sy1">&gt;</span><span class="sy3">&amp;</span> e,<br>
                  <a href="match_flag_type.html"><span class="kw2037">std::<span class="me2">regex_constants</span><span class="sy4">::</span><span class="me2">match_flag_type</span></span></a> flags <span class="sy1">=</span> <br>
</p>
                      <a href="match_flag_type.html"><span class="kw2038">std::<span class="me2">regex_constants</span><span class="sy4">::</span><span class="me2">match_default</span></span></a> <span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td> (2) </td>
<td> <span class="t-mark-rev t-since-cxx11">(C++11 起)</span> </td>
</tr>
<tr class="t-dcl t-since-cxx11">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1">&lt;</span> <span class="kw1">class</span> CharT, <span class="kw1">class</span> Alloc, <span class="kw1">class</span> Traits <span class="sy1">&gt;</span><br>
<p><span class="kw4">bool</span> regex_match<span class="br0">(</span> <span class="kw4">const</span> CharT<span class="sy2">*</span> str,<br>
                  <a href="match_results.html"><span class="kw2007">std::<span class="me2">match_results</span></span></a><span class="sy1">&lt;</span><span class="kw4">const</span> CharT<span class="sy2">*</span>,Alloc<span class="sy1">&gt;</span><span class="sy3">&amp;</span> m,<br>
                  <span class="kw4">const</span> <a href="http://zh.cppreference.com/w/cpp/regex/basic_regex"><span class="kw1999">std::<span class="me2">basic_regex</span></span></a><span class="sy1">&lt;</span>CharT,Traits<span class="sy1">&gt;</span><span class="sy3">&amp;</span> e,<br>
                  <a href="match_flag_type.html"><span class="kw2037">std::<span class="me2">regex_constants</span><span class="sy4">::</span><span class="me2">match_flag_type</span></span></a> flags <span class="sy1">=</span> <br>
</p>
                      <a href="match_flag_type.html"><span class="kw2038">std::<span class="me2">regex_constants</span><span class="sy4">::</span><span class="me2">match_default</span></span></a> <span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td> (3) </td>
<td> <span class="t-mark-rev t-since-cxx11">(C++11 起)</span> </td>
</tr>
<tr class="t-dcl t-since-cxx11">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1">&lt;</span> <span class="kw1">class</span> STraits, <span class="kw1">class</span> SAlloc, <br>
<p>          <span class="kw1">class</span> Alloc, <span class="kw1">class</span> CharT, <span class="kw1">class</span> Traits <span class="sy1">&gt;</span><br>
<span class="kw4">bool</span> regex_match<span class="br0">(</span> <span class="kw4">const</span> <a href="../string/basic_string.html"><span class="kw1228">std::<span class="me2">basic_string</span></span></a><span class="sy1">&lt;</span>CharT,STraits,SAlloc<span class="sy1">&gt;</span><span class="sy3">&amp;</span> s,<br>
                  <a href="match_results.html"><span class="kw2007">std::<span class="me2">match_results</span></span></a><span class="sy1">&lt;</span><br>
                      <span class="kw1">typename</span> <a href="../string/basic_string.html"><span class="kw1228">std::<span class="me2">basic_string</span></span></a><span class="sy1">&lt;</span>CharT,STraits,SAlloc<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">const_iterator</span>,<br>
                      Alloc<br>
                  <span class="sy1">&gt;</span><span class="sy3">&amp;</span> m,<br>
                  <span class="kw4">const</span> <a href="http://zh.cppreference.com/w/cpp/regex/basic_regex"><span class="kw1999">std::<span class="me2">basic_regex</span></span></a><span class="sy1">&lt;</span>CharT,Traits<span class="sy1">&gt;</span><span class="sy3">&amp;</span> e,<br>
                  <a href="match_flag_type.html"><span class="kw2037">std::<span class="me2">regex_constants</span><span class="sy4">::</span><span class="me2">match_flag_type</span></span></a> flags <span class="sy1">=</span> <br>
</p>
                      <a href="match_flag_type.html"><span class="kw2038">std::<span class="me2">regex_constants</span><span class="sy4">::</span><span class="me2">match_default</span></span></a> <span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td> (4) </td>
<td> <span class="t-mark-rev t-since-cxx11">(C++11 起)</span> </td>
</tr>
<tr class="t-dcl t-since-cxx11">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1">&lt;</span> <span class="kw1">class</span> CharT, <span class="kw1">class</span> Traits <span class="sy1">&gt;</span><br>
<p><span class="kw4">bool</span> regex_match<span class="br0">(</span> <span class="kw4">const</span> CharT<span class="sy2">*</span> str,<br>
                  <span class="kw4">const</span> <a href="http://zh.cppreference.com/w/cpp/regex/basic_regex"><span class="kw1999">std::<span class="me2">basic_regex</span></span></a><span class="sy1">&lt;</span>CharT,Traits<span class="sy1">&gt;</span><span class="sy3">&amp;</span> e,<br>
                  <a href="match_flag_type.html"><span class="kw2037">std::<span class="me2">regex_constants</span><span class="sy4">::</span><span class="me2">match_flag_type</span></span></a> flags <span class="sy1">=</span> <br>
</p>
                      <a href="match_flag_type.html"><span class="kw2038">std::<span class="me2">regex_constants</span><span class="sy4">::</span><span class="me2">match_default</span></span></a> <span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td> (5) </td>
<td> <span class="t-mark-rev t-since-cxx11">(C++11 起)</span> </td>
</tr>
<tr class="t-dcl t-since-cxx11">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1">&lt;</span> <span class="kw1">class</span> STraits, <span class="kw1">class</span> SAlloc, <br>
<p>          <span class="kw1">class</span> CharT, <span class="kw1">class</span> Traits <span class="sy1">&gt;</span><br>
<span class="kw4">bool</span> regex_match<span class="br0">(</span> <span class="kw4">const</span> <a href="../string/basic_string.html"><span class="kw1228">std::<span class="me2">basic_string</span></span></a><span class="sy1">&lt;</span>CharT, STraits, SAlloc<span class="sy1">&gt;</span><span class="sy3">&amp;</span> s,<br>
                  <span class="kw4">const</span> <a href="http://zh.cppreference.com/w/cpp/regex/basic_regex"><span class="kw1999">std::<span class="me2">basic_regex</span></span></a><span class="sy1">&lt;</span>CharT,Traits<span class="sy1">&gt;</span><span class="sy3">&amp;</span> e,<br>
                  <a href="match_flag_type.html"><span class="kw2037">std::<span class="me2">regex_constants</span><span class="sy4">::</span><span class="me2">match_flag_type</span></span></a> flags <span class="sy1">=</span> <br>
</p>
                      <a href="match_flag_type.html"><span class="kw2038">std::<span class="me2">regex_constants</span><span class="sy4">::</span><span class="me2">match_default</span></span></a> <span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td> (6) </td>
<td> <span class="t-mark-rev t-since-cxx11">(C++11 起)</span> </td>
</tr>
<tr class="t-dcl t-since-cxx14">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1">&lt;</span> <span class="kw1">class</span> STraits, <span class="kw1">class</span> SAlloc, <br>
<p>          <span class="kw1">class</span> Alloc, <span class="kw1">class</span> CharT, <span class="kw1">class</span> Traits <span class="sy1">&gt;</span><br>
<span class="kw4">bool</span> regex_match<span class="br0">(</span> <span class="kw4">const</span> <a href="../string/basic_string.html"><span class="kw1228">std::<span class="me2">basic_string</span></span></a><span class="sy1">&lt;</span>CharT,STraits,SAlloc<span class="sy1">&gt;</span><span class="sy3">&amp;&amp;</span>,<br>
                  <a href="match_results.html"><span class="kw2007">std::<span class="me2">match_results</span></span></a><span class="sy1">&lt;</span><br>
                      <span class="kw1">typename</span> <a href="../string/basic_string.html"><span class="kw1228">std::<span class="me2">basic_string</span></span></a><span class="sy1">&lt;</span>CharT,STraits,SAlloc<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">const_iterator</span>,<br>
                      Alloc<br>
                  <span class="sy1">&gt;</span><span class="sy3">&amp;</span>,<br>
                  <span class="kw4">const</span> <a href="http://zh.cppreference.com/w/cpp/regex/basic_regex"><span class="kw1999">std::<span class="me2">basic_regex</span></span></a><span class="sy1">&lt;</span>CharT,Traits<span class="sy1">&gt;</span><span class="sy3">&amp;</span>,<br>
                  <a href="match_flag_type.html"><span class="kw2037">std::<span class="me2">regex_constants</span><span class="sy4">::</span><span class="me2">match_flag_type</span></span></a> flags <span class="sy1">=</span> <br>
</p>
                      <a href="match_flag_type.html"><span class="kw2038">std::<span class="me2">regex_constants</span><span class="sy4">::</span><span class="me2">match_default</span></span></a> <span class="br0">)</span> <span class="sy1">=</span> delete<span class="sy4">;</span></span></div></td>
<td> (7) </td>
<td> <span class="t-mark-rev t-since-cxx14">(C++14 起)</span> </td>
</tr>
<tr class="t-dcl-sep"><td></td><td></td><td></td></tr>
</tbody></table>
<p>确定正则表达式 <code>el</code> 是否匹配整个目标字符序列，它可能以 <span class="t-lc"><a href="../string/basic_string.html" title="cpp/string/basic string">std::string</a></span> 、 C 字符串或迭代器对表示。
</p>
<div class="t-li1"><span class="t-li">1)</span> 确定正则表达式 <code>e</code> 和整个目标字符序列 <code>[first,last)</code> 间是否有匹配，不计 <code>flags</code> 的效果。确定是否有匹配时，只考虑匹配整个字符序列的潜在匹配。匹配结果返回于 <code>m</code> 。</div>
<div class="t-li1"><span class="t-li">2)</span> 表现同上面的 (1) ，省去匹配结果。</div>
<div class="t-li1"><span class="t-li">3)</span> 返回 <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">regex_match</span><span class="br0">(</span>str, str <span class="sy2">+</span> <a href="../string/char_traits.html"><span class="kw1267">std::<span class="me2">char_traits</span></span></a><span class="sy1">&lt;</span>charT<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">length</span><span class="br0">(</span>str<span class="br0">)</span>, m, e, flags<span class="br0">)</span></span></span> 。</div>
<div class="t-li1"><span class="t-li">4)</span> 返回 <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">regex_match</span><span class="br0">(</span>s.<span class="me1">begin</span><span class="br0">(</span><span class="br0">)</span>, s.<span class="me1">end</span><span class="br0">(</span><span class="br0">)</span>, m, e, flags<span class="br0">)</span></span></span> 。</div>
<div class="t-li1"><span class="t-li">5)</span> 返回 <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">regex_match</span><span class="br0">(</span>str, str <span class="sy2">+</span> <a href="../string/char_traits.html"><span class="kw1267">std::<span class="me2">char_traits</span></span></a><span class="sy1">&lt;</span>charT<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">length</span><span class="br0">(</span>str<span class="br0">)</span>, e, flags<span class="br0">)</span></span></span> 。</div>
<div class="t-li1"><span class="t-li">6)</span> 返回 <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">regex_match</span><span class="br0">(</span>s.<span class="me1">begin</span><span class="br0">(</span><span class="br0">)</span>, s.<span class="me1">end</span><span class="br0">(</span><span class="br0">)</span>, e, flags<span class="br0">)</span></span></span> 。</div>
<div class="t-li1"><span class="t-li">7)</span> 禁止重载 4 接受临时 string ，否则此函数会以立即变为非法的 string 迭代器填充 match_results m 。</div>
<p>注意 <code>regex_match</code> 将只成功地匹配正则表达式到<i>整个</i>字符序列，而 <span class="t-lc"><a href="regex_search.html" title="cpp/regex/regex search">std::regex_search</a></span> 将成功地匹配子序列。
</p>
<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">参数</span></h3>
<table class="t-par-begin">


<tr class="t-par">
<td>  first, last
</td>
<td> -
</td>
<td> 应用 regex 到的目标字符范围，以迭代器给定
</td></tr>
<tr class="t-par">
<td>  m
</td>
<td> -
</td>
<td> 匹配结果
</td></tr>
<tr class="t-par">
<td>  str
</td>
<td> -
</td>
<td> 目标字符串，以空终止 C 风格字符串给出
</td></tr>
<tr class="t-par">
<td>  s
</td>
<td> -
</td>
<td> 目标字符串，以 <span class="t-lc"><a href="../string/basic_string.html" title="cpp/string/basic string">std::basic_string</a></span> 给出
</td></tr>
<tr class="t-par">
<td>  e
</td>
<td> -
</td>
<td> 正则表达式
</td></tr>
<tr class="t-par">
<td>  flags
</td>
<td> -
</td>
<td> 用于确定将如何进行匹配的标志
</td></tr>
<tr class="t-par-hitem">
<td colspan="3"> 类型要求
</td></tr>
<tr class="t-par-req">
<td colspan="3"> -<div class="spacer"></div><code>BidirIt</code> 必须满足<a href="../named_req/BidirectionalIterator.html" title="cpp/named req/BidirectionalIterator"><i>遗留双向迭代器</i> <span style="font-family: Georgia, 'DejaVu Serif', serif; font-style:italic">(LegacyBidirectionalIterator)</span> </a> 的要求。
</td></tr></table>
<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC">返回值</span></h3>
<p>若匹配存在则返回 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">true</span></span></span> ，否则返回 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">false</span></span></span> 。任一情况下，以下列方式更新对象 <code>m</code> ：
</p><p>若匹配不存在：
</p>
<table class="t-dsc-begin">

<tr class="t-dsc">
<td colspan="2">  <span class="t-c"><span class="mw-geshi cpp source-cpp">m.<span class="me1">ready</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1">==</span> <span class="kw2">true</span></span></span>
</td></tr>

<tr class="t-dsc">
<td colspan="2">  <span class="t-c"><span class="mw-geshi cpp source-cpp">m.<span class="me1">empty</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1">==</span> <span class="kw2">true</span></span></span>
</td></tr>

<tr class="t-dsc">
<td colspan="2">  <span class="t-c"><span class="mw-geshi cpp source-cpp">m.<span class="me1">size</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1">==</span> <span class="nu0">0</span></span></span>
</td></tr>
</table>
<p>若匹配存在：
</p>
<table class="t-dsc-begin">

<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">m.<span class="me1">ready</span><span class="br0">(</span><span class="br0">)</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">true</span></span></span>
</td></tr>

<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">m.<span class="me1">empty</span><span class="br0">(</span><span class="br0">)</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">false</span></span></span>
</td></tr>

<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">m.<span class="me1">size</span><span class="br0">(</span><span class="br0">)</span></span></span>
</td>
<td>  <a href="ecmascript.html#.E5.AD.90.E8.A1.A8.E8.BE.BE.E5.BC.8F" title="cpp/regex/ecmascript">有标记子表达式</a>数加 1 ，即 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="nu0">1</span><span class="sy2">+</span>e.<span class="me1">mark_count</span><span class="br0">(</span><span class="br0">)</span></span></span>
</td></tr>

<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">m.<span class="me1">prefix</span><span class="br0">(</span><span class="br0">)</span>.<span class="me1">first</span></span></span>
</td>
<td>  <code>first</code>
</td></tr>

<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">m.<span class="me1">prefix</span><span class="br0">(</span><span class="br0">)</span>.<span class="me1">second</span></span></span>
</td>
<td>  <code>first</code>
</td></tr>

<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">m.<span class="me1">prefix</span><span class="br0">(</span><span class="br0">)</span>.<span class="me1">matched</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">false</span></span></span> （匹配前缀为空）
</td></tr>

<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">m.<span class="me1">suffix</span><span class="br0">(</span><span class="br0">)</span>.<span class="me1">first</span></span></span>
</td>
<td>  <code>last</code>
</td></tr>

<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">m.<span class="me1">suffix</span><span class="br0">(</span><span class="br0">)</span>.<span class="me1">second</span></span></span>
</td>
<td>  <code>last</code>
</td></tr>

<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">m.<span class="me1">suffix</span><span class="br0">(</span><span class="br0">)</span>.<span class="me1">matched</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">false</span></span></span> （匹配前缀为空）
</td></tr>

<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">m<span class="br0">[</span><span class="nu0">0</span><span class="br0">]</span>.<span class="me1">first</span></span></span>
</td>
<td>  <code>first</code>
</td></tr>

<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">m<span class="br0">[</span><span class="nu0">0</span><span class="br0">]</span>.<span class="me1">second</span></span></span>
</td>
<td>  <code>last</code>
</td></tr>

<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">m<span class="br0">[</span><span class="nu0">0</span><span class="br0">]</span>.<span class="me1">matched</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">true</span></span></span> （匹配整个序列）
</td></tr>

<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">m<span class="br0">[</span>n<span class="br0">]</span>.<span class="me1">first</span></span></span>
</td>
<td> 匹配<a href="ecmascript.html#.E5.AD.90.E8.A1.A8.E8.BE.BE.E5.BC.8F" title="cpp/regex/ecmascript">有标记子表达式</a> n 的序列起始，或若该子表达式不参与匹配则为 <code>last</code>
</td></tr>

<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">m<span class="br0">[</span>n<span class="br0">]</span>.<span class="me1">second</span></span></span>
</td>
<td> 匹配<a href="ecmascript.html#.E5.AD.90.E8.A1.A8.E8.BE.BE.E5.BC.8F" title="cpp/regex/ecmascript">有标记子表达式</a> n 的序列结尾，或若该子表达式不参与匹配则为 <code>last</code>
</td></tr>

<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">m<span class="br0">[</span>n<span class="br0">]</span>.<span class="me1">matched</span></span></span>
</td>
<td> 若表达式 n 参与匹配则为 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">true</span></span></span> ，否则为 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">false</span></span></span>
</td></tr>
</table>
<h3><span class="mw-headline" id=".E6.B3.A8.E6.84.8F">注意</span></h3>
<p>因为 <code>regex_match</code> 只考虑完全匹配，故同一 regex 可能在 <code>regex_match</code> 和  <span class="t-lc"><a href="regex_search.html" title="cpp/regex/regex search">std::regex_search</a></span> 间给出不同的匹配：
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="cpp source-cpp"><pre class="de1"><a href="http://zh.cppreference.com/w/cpp/regex/basic_regex"><span class="kw2000">std::<span class="me2">regex</span></span></a> re<span class="br0">(</span><span class="st0">"Get|GetValue"</span><span class="br0">)</span><span class="sy4">;</span>
<a href="match_results.html"><span class="kw2008">std::<span class="me2">cmatch</span></span></a> m<span class="sy4">;</span>
<a href="regex_search.html"><span class="kw2012">std::<span class="me2">regex_search</span></span></a><span class="br0">(</span><span class="st0">"GetValue"</span>, m, re<span class="br0">)</span><span class="sy4">;</span>  <span class="co1">// 返回 true ，且 m[0] 含 "Get"</span>
std<span class="sy4">::</span><span class="me2">regex_match</span> <span class="br0">(</span><span class="st0">"GetValue"</span>, m, re<span class="br0">)</span><span class="sy4">;</span>  <span class="co1">// 返回 true ，且 m[0] 含 "GetValue"</span>
<a href="regex_search.html"><span class="kw2012">std::<span class="me2">regex_search</span></span></a><span class="br0">(</span><span class="st0">"GetValues"</span>, m, re<span class="br0">)</span><span class="sy4">;</span> <span class="co1">// 返回 true ，且 m[0] 含 "Get"</span>
std<span class="sy4">::</span><span class="me2">regex_match</span> <span class="br0">(</span><span class="st0">"GetValues"</span>, m, re<span class="br0">)</span><span class="sy4">;</span> <span class="co1">// 返回 false</span></pre></div></div>
<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">示例</span></h3>
<div class="t-example"><div class="t-example-live-link"><div class="coliru-btn coliru-btn-run-init">运行此代码</div></div>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="cpp source-cpp"><pre class="de1"><span class="co2">#include &lt;iostream&gt;</span>
<span class="co2">#include &lt;string&gt;</span>
<span class="co2">#include &lt;regex&gt;</span>
 
<span class="kw4">int</span> main<span class="br0">(</span><span class="br0">)</span>
<span class="br0">{</span>
    <span class="co1">// 简单正则表达式匹配</span>
    <a href="../string/basic_string.html"><span class="kw1230">std::<span class="me2">string</span></span></a> fnames<span class="br0">[</span><span class="br0">]</span> <span class="sy1">=</span> <span class="br0">{</span><span class="st0">"foo.txt"</span>, <span class="st0">"bar.txt"</span>, <span class="st0">"baz.dat"</span>, <span class="st0">"zoidberg"</span><span class="br0">}</span><span class="sy4">;</span>
    <a href="http://zh.cppreference.com/w/cpp/regex/basic_regex"><span class="kw2000">std::<span class="me2">regex</span></span></a> txt_regex<span class="br0">(</span><span class="st0">"[a-z]+<span class="es1">\\</span>.txt"</span><span class="br0">)</span><span class="sy4">;</span>
 
    <span class="kw1">for</span> <span class="br0">(</span><span class="kw4">const</span> <span class="kw4">auto</span> <span class="sy3">&amp;</span>fname <span class="sy4">:</span> fnames<span class="br0">)</span> <span class="br0">{</span>
        <a href="../io/cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> fname <span class="sy1">&lt;&lt;</span> <span class="st0">": "</span> <span class="sy1">&lt;&lt;</span> std<span class="sy4">::</span><span class="me2">regex_match</span><span class="br0">(</span>fname, txt_regex<span class="br0">)</span> <span class="sy1">&lt;&lt;</span> <span class="st0">'<span class="es1">\n</span>'</span><span class="sy4">;</span>
    <span class="br0">}</span>   
 
    <span class="co1">// 提取子匹配</span>
    <a href="http://zh.cppreference.com/w/cpp/regex/basic_regex"><span class="kw2000">std::<span class="me2">regex</span></span></a> base_regex<span class="br0">(</span><span class="st0">"([a-z]+)<span class="es1">\\</span>.txt"</span><span class="br0">)</span><span class="sy4">;</span>
    <a href="match_results.html"><span class="kw2010">std::<span class="me2">smatch</span></span></a> base_match<span class="sy4">;</span>
 
    <span class="kw1">for</span> <span class="br0">(</span><span class="kw4">const</span> <span class="kw4">auto</span> <span class="sy3">&amp;</span>fname <span class="sy4">:</span> fnames<span class="br0">)</span> <span class="br0">{</span>
        <span class="kw1">if</span> <span class="br0">(</span>std<span class="sy4">::</span><span class="me2">regex_match</span><span class="br0">(</span>fname, base_match, base_regex<span class="br0">)</span><span class="br0">)</span> <span class="br0">{</span>
            <span class="co1">// 首个 sub_match 是整个字符串；下个</span>
            <span class="co1">// sub_match 是首个有括号表达式。</span>
            <span class="kw1">if</span> <span class="br0">(</span>base_match.<span class="me1">size</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1">==</span> <span class="nu0">2</span><span class="br0">)</span> <span class="br0">{</span>
                <a href="sub_match.html"><span class="kw2005">std::<span class="me2">ssub_match</span></span></a> base_sub_match <span class="sy1">=</span> base_match<span class="br0">[</span><span class="nu0">1</span><span class="br0">]</span><span class="sy4">;</span>
                <a href="../string/basic_string.html"><span class="kw1230">std::<span class="me2">string</span></span></a> base <span class="sy1">=</span> base_sub_match.<span class="me1">str</span><span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span>
                <a href="../io/cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> fname <span class="sy1">&lt;&lt;</span> <span class="st0">" has a base of "</span> <span class="sy1">&lt;&lt;</span> base <span class="sy1">&lt;&lt;</span> <span class="st0">'<span class="es1">\n</span>'</span><span class="sy4">;</span>
            <span class="br0">}</span>
        <span class="br0">}</span>
    <span class="br0">}</span>
 
    <span class="co1">// 提取几个子匹配</span>
    <a href="http://zh.cppreference.com/w/cpp/regex/basic_regex"><span class="kw2000">std::<span class="me2">regex</span></span></a> pieces_regex<span class="br0">(</span><span class="st0">"([a-z]+)<span class="es1">\\</span>.([a-z]+)"</span><span class="br0">)</span><span class="sy4">;</span>
    <a href="match_results.html"><span class="kw2010">std::<span class="me2">smatch</span></span></a> pieces_match<span class="sy4">;</span>
 
    <span class="kw1">for</span> <span class="br0">(</span><span class="kw4">const</span> <span class="kw4">auto</span> <span class="sy3">&amp;</span>fname <span class="sy4">:</span> fnames<span class="br0">)</span> <span class="br0">{</span>
        <span class="kw1">if</span> <span class="br0">(</span>std<span class="sy4">::</span><span class="me2">regex_match</span><span class="br0">(</span>fname, pieces_match, pieces_regex<span class="br0">)</span><span class="br0">)</span> <span class="br0">{</span>
            <a href="../io/cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> fname <span class="sy1">&lt;&lt;</span> <span class="st0">'<span class="es1">\n</span>'</span><span class="sy4">;</span>
            <span class="kw1">for</span> <span class="br0">(</span>size_t i <span class="sy1">=</span> <span class="nu0">0</span><span class="sy4">;</span> i <span class="sy1">&lt;</span> pieces_match.<span class="me1">size</span><span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span> <span class="sy2">++</span>i<span class="br0">)</span> <span class="br0">{</span>
                <a href="sub_match.html"><span class="kw2005">std::<span class="me2">ssub_match</span></span></a> sub_match <span class="sy1">=</span> pieces_match<span class="br0">[</span>i<span class="br0">]</span><span class="sy4">;</span>
                <a href="../string/basic_string.html"><span class="kw1230">std::<span class="me2">string</span></span></a> piece <span class="sy1">=</span> sub_match.<span class="me1">str</span><span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span>
                <a href="../io/cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> <span class="st0">"  submatch "</span> <span class="sy1">&lt;&lt;</span> i <span class="sy1">&lt;&lt;</span> <span class="st0">": "</span> <span class="sy1">&lt;&lt;</span> piece <span class="sy1">&lt;&lt;</span> <span class="st0">'<span class="es1">\n</span>'</span><span class="sy4">;</span>
            <span class="br0">}</span>   
        <span class="br0">}</span>   
    <span class="br0">}</span>   
<span class="br0">}</span></pre></div></div>
<p>输出：
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="text source-text"><pre class="de1">foo.txt: 1
bar.txt: 1
baz.dat: 0
zoidberg: 0
foo.txt has a base of foo
bar.txt has a base of bar
foo.txt
  submatch 0: foo.txt
  submatch 1: foo
  submatch 2: txt
bar.txt
  submatch 0: bar.txt
  submatch 1: bar
  submatch 2: txt
baz.dat
  submatch 0: baz.dat
  submatch 1: baz
  submatch 2: dat</pre></div></div> 
</div>
<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">参阅</span></h3>
<table class="t-dsc-begin">

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="basic_regex.html" title="cpp/regex/basic regex"> <span class="t-lines"><span>basic_regex</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div>
</td>
<td>  正则表达式对象 <br> <span class="t-mark">(类模板)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="match_results.html" title="cpp/regex/match results"> <span class="t-lines"><span>match_results</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div>
</td>
<td>  标识一个正则表达式匹配，包含所有子表达式匹配 <br> <span class="t-mark">(类模板)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="regex_search.html" title="cpp/regex/regex search"> <span class="t-lines"><span>regex_search</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div>
</td>
<td>  尝试匹配一个正则表达式到字符序列的任何部分 <br> <span class="t-mark">(函数模板)</span> </td></tr>
</table>

<!-- 
NewPP limit report
Preprocessor visited node count: 4586/1000000
Preprocessor generated node count: 10052/1000000
Post‐expand include size: 94605/2097152 bytes
Template argument size: 30861/2097152 bytes
Highest expansion depth: 25/40
Expensive parser function count: 0/100
-->

<!-- Saved in parser cache with key mwiki1-mwiki_zh_:pcache:idhash:3533-0!*!0!!zh!*!zh!* and timestamp 20200207034234 -->
</div>                    <!-- /bodycontent -->
                                        <!-- printfooter -->
                    <div class="printfooter">
                    来自“<a href="https://zh.cppreference.com/mwiki/index.php?title=cpp/regex/regex_match&amp;oldid=55695">https://zh.cppreference.com/mwiki/index.php?title=cpp/regex/regex_match&amp;oldid=55695</a>”                    </div>
                    <!-- /printfooter -->
                                                            <!-- catlinks -->
                    <!-- /catlinks -->
                                                            <div class="visualClear"></div>
                    <!-- debughtml -->
                                        <!-- /debughtml -->
                </div>
                <!-- /bodyContent -->
            </div>
        </div>
        <!-- /content -->
        <!-- footer -->
        <div id="cpp-footer-base" class="noprint">
            <div id="footer">
                        <div id="cpp-navigation">
            <h5>导航</h5>
            <ul><li><a href="https://zh.cppreference.com/w/cpp/regex/regex_match">Online version</a></li><li>Offline version retrieved 2020-03-14 18:00.</li></ul></div>
                        <ul id="footer-info">
                                    <li id="footer-info-lastmod"> 本页面最后修改于2018年6月16日 (星期六) 02:58。</li>
                                    <li id="footer-info-viewcount">此页面已被浏览过10,341次。</li>
                            </ul>
                    </div>
        </div>
        <!-- /footer -->
        <script>if(window.mw){
mw.loader.state({"site":"loading","user":"missing","user.groups":"ready"});
}</script>
<script src="../../../common/skin_scripts.js"></script>
<script>if(window.mw){
mw.loader.load(["mediawiki.action.view.postEdit","mediawiki.user","mediawiki.page.ready","mediawiki.searchSuggest","mediawiki.hidpi","ext.gadget.MathJax","ext.gadget.ColiruCompiler"], null, true);
}</script>
<script src="../../../common/site_scripts.js"></script>
<script type="text/javascript">
var _gaq = _gaq || [];
_gaq.push(['_setAccount', 'UA-2828341-1']);
_gaq.push(['_setDomainName', 'cppreference.com']);
_gaq.push(['_trackPageview']);
</script><!-- Served in 2.532 secs. -->
	</body>
<!-- Cached 20200207034234 -->
</html>